301 lines
9.3 KiB
PHP
301 lines
9.3 KiB
PHP
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<?php
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/**
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* @file src/Core/Addon.php
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*/
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namespace Friendica\Core;
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use Friendica\App;
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use Friendica\Core\Config;
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use Friendica\Core\System;
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use Friendica\Database\DBM;
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/**
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* Some functions to handle addons
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*/
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class Addon
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{
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/**
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* @brief uninstalls an addon.
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*
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* @param string $plugin name of the addon
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* @return boolean
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*/
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function uninstall_plugin($plugin) {
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logger("Addons: uninstalling " . $plugin);
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dba::delete('addon', ['name' => $plugin]);
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@include_once('addon/' . $plugin . '/' . $plugin . '.php');
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if (function_exists($plugin . '_uninstall')) {
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$func = $plugin . '_uninstall';
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$func();
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}
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}
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/**
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* @brief installs an addon.
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*
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* @param string $plugin name of the addon
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* @return bool
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*/
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function install_plugin($plugin) {
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// silently fail if plugin was removed
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if (!file_exists('addon/' . $plugin . '/' . $plugin . '.php')) {
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return false;
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}
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logger("Addons: installing " . $plugin);
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$t = @filemtime('addon/' . $plugin . '/' . $plugin . '.php');
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@include_once('addon/' . $plugin . '/' . $plugin . '.php');
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if (function_exists($plugin . '_install')) {
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$func = $plugin . '_install';
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$func();
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$plugin_admin = (function_exists($plugin."_plugin_admin") ? 1 : 0);
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dba::insert('addon', ['name' => $plugin, 'installed' => true,
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'timestamp' => $t, 'plugin_admin' => $plugin_admin]);
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// we can add the following with the previous SQL
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// once most site tables have been updated.
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// This way the system won't fall over dead during the update.
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if (file_exists('addon/' . $plugin . '/.hidden')) {
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dba::update('addon', ['hidden' => true], ['name' => $plugin]);
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}
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return true;
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} else {
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logger("Addons: FAILED installing " . $plugin);
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return false;
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}
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}
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// reload all updated plugins
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function reload_plugins() {
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$plugins = Config::get('system', 'addon');
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if (strlen($plugins)) {
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$r = q("SELECT * FROM `addon` WHERE `installed` = 1");
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if (DBM::is_result($r)) {
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$installed = $r;
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} else {
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$installed = [];
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}
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$parr = explode(',',$plugins);
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if (count($parr)) {
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foreach ($parr as $pl) {
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$pl = trim($pl);
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$fname = 'addon/' . $pl . '/' . $pl . '.php';
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if (file_exists($fname)) {
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$t = @filemtime($fname);
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foreach ($installed as $i) {
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if (($i['name'] == $pl) && ($i['timestamp'] != $t)) {
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logger('Reloading plugin: ' . $i['name']);
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@include_once($fname);
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if (function_exists($pl . '_uninstall')) {
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$func = $pl . '_uninstall';
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$func();
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}
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if (function_exists($pl . '_install')) {
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$func = $pl . '_install';
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$func();
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}
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dba::update('addon', ['timestamp' => $t], ['id' => $i['id']]);
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}
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}
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}
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}
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}
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}
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}
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/**
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* @brief check if addon is enabled
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*
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* @param string $plugin
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* @return boolean
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*/
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function plugin_enabled($plugin) {
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return dba::exists('addon', ['installed' => true, 'name' => $plugin]);
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}
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/**
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* @brief registers a hook.
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*
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* @param string $hook the name of the hook
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* @param string $file the name of the file that hooks into
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* @param string $function the name of the function that the hook will call
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* @param int $priority A priority (defaults to 0)
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* @return mixed|bool
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*/
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function register_hook($hook, $file, $function, $priority=0) {
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$condition = ['hook' => $hook, 'file' => $file, 'function' => $function];
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$exists = dba::exists('hook', $condition);
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if ($exists) {
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return true;
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}
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$r = dba::insert('hook', ['hook' => $hook, 'file' => $file, 'function' => $function, 'priority' => $priority]);
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return $r;
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}
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/**
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* @brief unregisters a hook.
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*
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* @param string $hook the name of the hook
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* @param string $file the name of the file that hooks into
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* @param string $function the name of the function that the hook called
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* @return array
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*/
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function unregister_hook($hook, $file, $function) {
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$condition = ['hook' => $hook, 'file' => $file, 'function' => $function];
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$r = dba::delete('hook', $condition);
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return $r;
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}
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function load_hooks() {
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$a = get_app();
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$a->hooks = [];
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$r = dba::select('hook', ['hook', 'file', 'function'], [], ['order' => ['priority' => 'desc', 'file']]);
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while ($rr = dba::fetch($r)) {
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if (! array_key_exists($rr['hook'],$a->hooks)) {
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$a->hooks[$rr['hook']] = [];
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}
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$a->hooks[$rr['hook']][] = [$rr['file'],$rr['function']];
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}
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dba::close($r);
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}
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/**
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* @brief Calls a hook.
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*
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* Use this function when you want to be able to allow a hook to manipulate
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* the provided data.
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*
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* @param string $name of the hook to call
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* @param string|array &$data to transmit to the callback handler
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*/
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function call_hooks($name, &$data = null)
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{
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$a = get_app();
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if (is_array($a->hooks) && array_key_exists($name, $a->hooks)) {
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foreach ($a->hooks[$name] as $hook) {
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call_single_hook($a, $name, $hook, $data);
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}
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}
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}
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/**
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* @brief Calls a single hook.
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*
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* @param string $name of the hook to call
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* @param array $hook Hook data
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* @param string|array &$data to transmit to the callback handler
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*/
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function call_single_hook($a, $name, $hook, &$data = null) {
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// Don't run a theme's hook if the user isn't using the theme
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if (strpos($hook[0], 'view/theme/') !== false && strpos($hook[0], 'view/theme/'.current_theme()) === false)
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return;
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@include_once($hook[0]);
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if (function_exists($hook[1])) {
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$func = $hook[1];
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$func($a, $data);
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} else {
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// remove orphan hooks
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$condition = ['hook' => $name, 'file' => $hook[0], 'function' => $hook[1]];
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dba::delete('hook', $condition);
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}
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}
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//check if an app_menu hook exist for plugin $name.
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//Return true if the plugin is an app
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function plugin_is_app($name) {
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$a = get_app();
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if (is_array($a->hooks) && (array_key_exists('app_menu',$a->hooks))) {
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foreach ($a->hooks['app_menu'] as $hook) {
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if ($hook[0] == 'addon/'.$name.'/'.$name.'.php')
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return true;
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}
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}
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return false;
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}
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/**
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* @brief Parse plugin comment in search of plugin infos.
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*
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* like
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* \code
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*...* Name: Plugin
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* * Description: A plugin which plugs in
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* . * Version: 1.2.3
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* * Author: John <profile url>
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* * Author: Jane <email>
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* *
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* *\endcode
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* @param string $plugin the name of the plugin
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* @return array with the plugin information
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*/
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function get_plugin_info($plugin) {
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$a = get_app();
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$info=[
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'name' => $plugin,
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'description' => "",
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'author' => [],
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'version' => "",
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'status' => ""
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];
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if (!is_file("addon/$plugin/$plugin.php")) return $info;
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$stamp1 = microtime(true);
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$f = file_get_contents("addon/$plugin/$plugin.php");
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$a->save_timestamp($stamp1, "file");
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$r = preg_match("|/\*.*\*/|msU", $f, $m);
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if ($r) {
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$ll = explode("\n", $m[0]);
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foreach ( $ll as $l ) {
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$l = trim($l,"\t\n\r */");
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if ($l != "") {
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list($k,$v) = array_map("trim", explode(":",$l,2));
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$k= strtolower($k);
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if ($k == "author") {
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$r=preg_match("|([^<]+)<([^>]+)>|", $v, $m);
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if ($r) {
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$info['author'][] = ['name'=>$m[1], 'link'=>$m[2]];
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} else {
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$info['author'][] = ['name'=>$v];
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}
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} else {
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if (array_key_exists($k,$info)) {
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$info[$k]=$v;
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}
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}
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}
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}
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}
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return $info;
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}
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}
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